Shimano XT FC-M8000 Boost Crankarms

Rider Tuned for any Terrain

XT has gone 11-speed. The new Shimano XT Crankset features Rider Tuned 11speed gearing, new and improved materials and shifting technologies previously found only on the race level XTR components. This brings additional performance, and the optimal balance of durability, weight, and value to the trusted workhorse Shimano XT line. These cranks have Hollowtech ll technology for stiffness and weight savings, an asymmetrical bolt pattern that put the strength where you need, and spins on a XTR and Dura-ace inspired bottom bracket.

This crank is specifically designed for 148mm O.L.D. rear triangle frames.

I replaced a lower end crankset with the new Shimano XT single ring. It is significantly lighter and fantastic looking. Shimano has done a nice job with the XT lineup and the pricing has come down for some reason. BONUS!

My Yeti SB 5.5 size M with the SLX/XT build bike came with 175mm Race Face Aeffect cranks. Although, these were generally good cranks, they are on the long side of what my short legs like, and they were constantly banging obstacles. So, I decided to switch to the 170mm XT cranks and see if that helped. Well, not only do they look great on what is now a full XT build, but my legs are happier, and my trail clearance is better. I also switched from a RF 30 to a XT 32 tooth chainring, and I've got a nice compliment for my 11-46 cogs with my mostly flat but tight and technical trails in N. Houston, TX. If you're looking for high end crank at a relatively cheap cost, I recommend taking a look at this one.

OK, ok, ok....it's another "standard" that is NOT compatible with the older mech.But is change unto itself necessarily better?Now that I'm done bitching about the new boost standard...Shimano makes mostly quality stuff.

It's light and strong AND cheap; which breaks all of the rules; right?

I came back to XT cranks after a long stint on carbon cranks. While XT might not have the flash or uber lightweight allure of carbon cranks, they just work plain and simple. No longer do I have to worry about creaky spindles, inserts coming unbonded or cracked arms. Definitely worth the marginal weight penalty going back to aluminum cranks!

These are the best aluminum cranks on the market in my opinion. When you consider price, durability, weight, and performance, there probably isn't much better. The only improvement could be a direct mount chainring instead of the 4 bolt.

BEST ANSWER:Also just FYI The under head length on the bolts that comes with this crank is 8mm which may be fine for the shimano chainring, but they are nOT long enough to hold a thicker (Absolute Black in my case) chain ring properly. Had to order the longer 10mm wolf tooth bolts for a secure mounting.

BEST ANSWER:Also just FYI The under head length on the bolts that comes with this crank is 8mm which may be fine for the shimano chainring, but they are nOT long enough to hold a thicker (Absolute Black in my case) chain ring properly. Had to order the longer 10mm wolf tooth bolts for a secure mounting.

I think they do come with bolts. The cranks, not the chain ring. If not, you can buy bolts even here at Jenson or your LBS. if you want some color coordinating bolts (if buying a different color chainring) google Wolftooth components.

BEST ANSWER:A qualified yes. My son changed over his race bike and stumpy to 'one by' systems. The stumpy from 2012, the niner 9RDO with the complete XT groupset he built in 2015 originally 'two by', now with a Race Face 'one by' chain ring and I believe he exchanged to a 11 spd cassette. Ron

BEST ANSWER:A qualified yes. My son changed over his race bike and stumpy to 'one by' systems. The stumpy from 2012, the niner 9RDO with the complete XT groupset he built in 2015 originally 'two by', now with a Race Face 'one by' chain ring and I believe he exchanged to a 11 spd cassette. Ron

As long as you have a narrow wide chainring, it will work on any type of 1x setup. Be aware that the BCD on this set of crank arms is Assymetric, so the 4 bolt holes are more rectangularly spaced that being equal distance from each other.

Possibly...I am using an eleven-speed chain so, I know that will work with a 1 x 11 spd set-up. The only concern I would check into is the loss of some surface area with the narrow/wide chainring and a wider chain. Hope this helps! :)

I do not think that this crankset will work with a 1X 10 set up. It is designed for a longer chainline for Boost. To be sure, ask your local bike shop mechanic. I am not a qualified expert, only a end-user.

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